Removing canvas rendering mode switching feature

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 006d171b955fc56e8ff4539724661ee9274c36ee..2947f2173f1533a51949902335085577c54da935 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -371,11 +371,6 @@ const char kEnableDisplayList2dCanvas[]     = "enable-display-list-2d-canvas";
 const char kForceDisplayList2dCanvas[]      = "force-display-list-2d-canvas";
 const char kDisableDisplayList2dCanvas[]    = "disable-display-list-2d-canvas";
 
-// Enables dynamic rendering pipeline switching to optimize the
-// performance of 2d canvas
-const char kEnableCanvas2dDynamicRenderingModeSwitching[] =
-    "enable-canvas-2d-dynamic-rendering-mode-switching";
-
 // Enable experimental canvas features, e.g. canvas 2D context attributes
 const char kEnableExperimentalCanvasFeatures[] =
     "enable-experimental-canvas-features";